In:
Applied Physics Letters, AIP Publishing, Vol. 92, No. 11 ( 2008-03-17)
Abstract:
By transitioning to semicrystalline polymers, the performance of polymer-based solar cells has recently increased to over 5% [W. Ma et al., Adv. Fund. Mater. 15, 1665 (2005); G. Li et al., Nat. Mater. 4, 864 (2005); M. Reyes-Reyes et al., Org. Lett. 7, 5749 (2005); J. Y. Kim et al., Adv. Mater. (Weinheim, Ger.) 18, 572 (2005); J. Peet et al., Nat. Mater. 6, 497 (2007)]. Poly(2,5-bis(3-tetradecyllthiophen-2-yl)thieno[3,2-b] thiophene) (pBTTT) has caused recent excitement in the organic electronics community because of its high reported hole mobility (0.6cm2V−1s−1) that was measured in field effect transistors and its ability to form large crystals. In this letter, we investigate the potential of pBTTT as light absorber and hole transporter in a bulk heterojunction solar cell. We find that the highest efficiency of 2.3% is achieved by using a 1:4 blend of pBTTT and[6,6]-phenyl C61-butyric acid methyl ester. The hole mobility as measured by space charge limited current modeling was found to be 3.8×10−4cm2V−1s−1 in this blend.
Type of Medium:
Online Resource
ISSN:
0003-6951
,
1077-3118
Language:
English
Publisher:
AIP Publishing
Publication Date:
2008
detail.hit.zdb_id:
211245-0
detail.hit.zdb_id:
1469436-0
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